Hurlyburly (1998)

Eddie, Mickey and Phil share a house in Hollywood: Eddie and Mickey are more or less successful casting agents, Phil an out of work actor who has been kicked out by his wife. It is not only Phil who is emotionally unstable though -- Eddie is drugged out and borderline violent, while Mickey is manipulative and morally bankrupt. All three use women, including sharing Donna, a young girl who is given to them by a friend as a sexual gift. Darlene is nominally Eddie's girlfriend, but has slept with Mickey, while Phil throws an exotic dancer out of a moving car. Ultimately, Phil's situation forces him to take drastic action, and Eddie arrives at an emotional dead end that might just become a turning point.